Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e70zl-0004za-7W for pgsql-performance@arkaria.postgresql.org; Tue, 24 Oct 2017 15:19:57 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1e70zk-0004Sj-Ly for pgsql-performance@arkaria.postgresql.org; Tue, 24 Oct 2017 15:19:56 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1e70y0-0001NS-JV for pgsql-performance@postgresql.org; Tue, 24 Oct 2017 15:18:08 +0000 Received: from mail-it0-x230.google.com ([2607:f8b0:4001:c0b::230]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84_2) (envelope-from ) id 1e70xx-00015v-Vb for pgsql-performance@postgresql.org; Tue, 24 Oct 2017 15:18:07 +0000 Received: by mail-it0-x230.google.com with SMTP id j140so10491040itj.1 for ; Tue, 24 Oct 2017 08:18:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telsasoft-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=dCHc7cJSusTD5mQRH6KPPEcA2MGkUC4xARuxSlo2cJk=; b=lb8iMMN+LhCXABSfiV1grc1EpNsdr8AiTfBWVi+Kmj9It7VWnvZgmUdVkqpiDzWj9r zZl9mRutqalmY1eHxRAg27lhPuB5cdjPeHLtzGIKzqCNCo+QvXrM/8Wc/FUhrvdO9fnC hYq+RlPtUELJcfIkmyB7WLPm32dexkhB1fd67hUYhoyHj8etuylIUv8HQjRUuAGVp1ej tzhywlXAL34I6LWNUVJ+FatyxAZIgROBqoyrMLV1fSA6fR1UpdpH2j/rhzWJeV3u3Oc2 KrvbB/LSaeORMyPbk7XFGtKzwof1+T8Xshmc5QtMLIgHik1mFqNIQq5VS+QopmhUMdDC 3EFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to:user-agent; bh=dCHc7cJSusTD5mQRH6KPPEcA2MGkUC4xARuxSlo2cJk=; b=T8KER+l1Zcg8shxvGjEAFKtq2lCWLRISRN74obg85svVHIpH5f0NccaVeQLJUaV7eO tNdl/ft6t6Ui6bkxnFMzGzDzQFK9YEyJlL5q/gMqoOKTurQfRzyW/g5qrPGGBO6M0NNL 4ZWkeROTOWenu626J7Gfesz9qfYN/mOzm2KLJbruXYTJ+WhM/X9C5KIcTfz+cJ3ffv9B 7lzmj4eN0cnUz+3h206Wfyh5w2uAFfo6dlavAfD2GKe+HWmbAmP6Rlu4Kq38pPn5pcUu 2P5owXdA6h4a9Wok910mlQ/dHb4ZpE01kLlp9WvxD02afH0Up6DRNJNrybk89mA/cC+0 iXJA== X-Gm-Message-State: AMCzsaV2nEWg+VqGXgXaEo1WwrHpuQyuBmIBxnxlEBmxs1rUW96YPnJr qXTuyNcOSZidxPi/0NddcQn6zA== X-Google-Smtp-Source: ABhQp+QZ68vAGlFnMTeWhhz8My2xy0JN2KsvRUFjnsANFuNPg5XiTnzvf1GLsCbUP3EaS3UVKAaDOA== X-Received: by 10.36.219.198 with SMTP id c189mr13198999itg.29.1508858284571; Tue, 24 Oct 2017 08:18:04 -0700 (PDT) Received: from pryzbyj (charmander.telsasoft.com. [50.244.222.1]) by smtp.gmail.com with ESMTPSA id s81sm222201ita.19.2017.10.24.08.18.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 24 Oct 2017 08:18:04 -0700 (PDT) Received: by pryzbyj (Postfix, from userid 1000) id 3E1CF8014B7; Tue, 24 Oct 2017 10:18:03 -0500 (CDT) Date: Tue, 24 Oct 2017 10:18:03 -0500 From: Justin Pryzby To: johannes =?iso-8859-1?Q?gra=EBn?= Cc: Pavel Stehule , "pgsql-performance@postgresql.org" Subject: Re: performance drop after upgrade (9.6 > 10) Message-ID: <20171024151803.GH21735@telsasoft.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On Tue, Oct 24, 2017 at 04:15:59PM +0200, johannes graën wrote: > upgrading to 10. I can provide an example for 10 [1], but I cannot > generate a query plan for 9.6 anymore. You could (re)install PG96 alongside PG10 and run a copy of the DB (even from your homedir, or on a difference server) and pg_dump |pg_restore the relevant tables (just be sure to specify the alternate host/port/user/etc as needed for the restore invocation). Justin -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance